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Ohm's Law Worksheet

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Ohm's Law Worksheet

Electrical circuit diagram

⚡ Part 1: Experimental Data Recording

Safety Reminder: Handle all electrical equipment carefully. Avoid short circuits and ensure connections are secure before taking measurements.

1. Record your experimental measurements in the table below:
Trial Voltage (V) Current (I) Resistance (R)
1 ______ V ______ A ______ Ω
2 ______ V ______ A ______ Ω
3 ______ V ______ A ______ Ω
2. What happened to the current when you increased the resistance? Explain your observation.

🧮 Part 2: Ohm's Law Calculations

Remember: Ohm's Law states that V = I × R

3. Calculate the missing values using Ohm's Law. Show your working.

a) If V = 9V and I = 0.5A, what is the resistance?

R = _______ Ω

b) If V = 12V and R = 4Ω, what is the current?

I = _______ A

c) If I = 2A and R = 6Ω, what is the voltage?

V = _______ V

4. A torch bulb has a resistance of 8Ω and is connected to a 6V battery. Calculate the current flowing through the bulb.

Current = _______ A

💭 Part 3: Understanding Resistance

5. What would happen to the current in a circuit if the resistance was doubled but the voltage stayed the same?

Current would double

Current would halve

Current would stay the same

Current would quadruple

6. Which of the following are good electrical safety practices? (Select all that apply)

Check connections before switching on

Create short circuits to test equipment

Handle equipment with care

Work with wet hands

7. Explain in your own words how Ohm's Law helps us understand the relationship between voltage, current, and resistance in electrical circuits.
8. Give one real-world example of how understanding resistance is important in electrical devices we use at home.

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